ABSTRACTThe research population for this cross-sectional study consisted of 1424 Shiraz-based parents of first-year secondary students who were chosen randomly. An online questionnaire with three sections for demographic data, the theories of planned behaviour, and a questionnaire about spiritual well-being served as the data gathering tools. A significance level of p < 0.05 was taken into account when analysing the obtained data using SPSS 26 and independent t, Pearson correlation coefficient, and linear regression. The average parent participating in this study had two children, and the average age was 40. In addition to having average scores for attitude, subjective norms, and perceived behavioural control, parents also had average spiritual health. Parents’ behavioural intentions and their spiritual well-being were significantly correlated. Except for perceived behavioural control, there was a significant association between conduct and all of the theory of planned behaviour’s dimensions and a significant relationship between intention and all of them.